Peer-Reviewed Journal Details
Mandatory Fields
Rudd, AL;Breslin, CB
2000
January
Electrochimica Acta
Photo-induced dissolution of zinc in alkaline solutions
Published
69 ()
Optional Fields
ELECTRODES PASSIVATION CORROSION FILM
45
1571
1579
The passive behaviour of zinc in an alkaline pH 13.0 solution under dark and illumination conditions has been studied using de polarization and ac impedance techniques. Illumination with polychromatic light in the wavelength region 200-900 nm caused significant dissolution of anodically formed passive layers on zinc. This was evident from increased anodic currents, a ten-fold decrease in the charge transfer resistance and an increase in the capacitance of the passive layer. The photo-induced dissolution effect was only slightly evident under open-circuit conditions, where a precipitated or adsorbed layer forms on the electrode. These results are explained in terms of the n-type semi-conducting properties of ZnO. (C) 2000 Elsevier Science Ltd. All rights reserved.
OXFORD
0013-4686
Grant Details